The static and dynamic fracture of brittle materials

Simple item page
dc.contributor.advisorBall, Anthonyen_ZA
dc.contributor.authorPayne, Basil Wolfen_ZA
dc.date.accessioned2016-03-21T19:02:09Z
dc.date.available2016-03-21T19:02:09Z
dc.date.issued1977en_ZA
dc.descriptionContains published articles.en_ZA
dc.descriptionBibliography: p. 131-138.en_ZA
dc.description.abstractExperiments on the behaviour of brittle materials, particularly quartz, during the initial period of loading, at the onset of fracture and during the stage of rapid crack propagation, have been performed in order to gain an insight into some of the fundamental processes of brittle fracture which might prove useful in the solution of practical problems in mining and process operations. Studies have also been conducted into the nature of the damage produced by a diamond stylus sliding on a quartz surface. The results of these studies have been correlated with ancilliary experiments in which the effects of the deformation produced by a sharp indenter and sliding diamond polishing particles on quartz were examined. The geometry of cracks in glass and quartz during the loading stage has been observed by scanning electron microscopy and was found to be approximately elliptical. By making some simple assumptions, an equation has been derived that enables the fracture surface energy to be deduced from shape of the crack and the loading conditions. The brittleness of a material is indicated by the difference between the fracture surface energy and the thermodynamic surface energy of the material. In a perfectly brittle body they are equal. In order to make an accurate comparison with the true surface energy in quartz as calculated from atomic bond energy data, anisotropic elastic theory was used in the evaluation of the fracture surface energy.en_ZA
dc.identifier.apacitationPayne, B. W. (1977). <i>The static and dynamic fracture of brittle materials</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering. Retrieved from http://hdl.handle.net/11427/18010en_ZA
dc.identifier.chicagocitationPayne, Basil Wolf. <i>"The static and dynamic fracture of brittle materials."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1977. http://hdl.handle.net/11427/18010en_ZA
dc.identifier.citationPayne, B. 1977. The static and dynamic fracture of brittle materials. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Payne, Basil Wolf AB - Experiments on the behaviour of brittle materials, particularly quartz, during the initial period of loading, at the onset of fracture and during the stage of rapid crack propagation, have been performed in order to gain an insight into some of the fundamental processes of brittle fracture which might prove useful in the solution of practical problems in mining and process operations. Studies have also been conducted into the nature of the damage produced by a diamond stylus sliding on a quartz surface. The results of these studies have been correlated with ancilliary experiments in which the effects of the deformation produced by a sharp indenter and sliding diamond polishing particles on quartz were examined. The geometry of cracks in glass and quartz during the loading stage has been observed by scanning electron microscopy and was found to be approximately elliptical. By making some simple assumptions, an equation has been derived that enables the fracture surface energy to be deduced from shape of the crack and the loading conditions. The brittleness of a material is indicated by the difference between the fracture surface energy and the thermodynamic surface energy of the material. In a perfectly brittle body they are equal. In order to make an accurate comparison with the true surface energy in quartz as calculated from atomic bond energy data, anisotropic elastic theory was used in the evaluation of the fracture surface energy. DA - 1977 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1977 T1 - The static and dynamic fracture of brittle materials TI - The static and dynamic fracture of brittle materials UR - http://hdl.handle.net/11427/18010 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/18010
dc.identifier.vancouvercitationPayne BW. The static and dynamic fracture of brittle materials. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Centre for Materials Engineering, 1977 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/18010en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentCentre for Materials Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherMaterials Engineeringen_ZA
dc.titleThe static and dynamic fracture of brittle materialsen_ZA
dc.typeDoctoral Thesis
dc.type.qualificationlevelDoctoral
dc.type.qualificationnamePhDen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
thesis_ebe_1977_payne_basil_wolf.pdf
Size:
5.17 MB
Format:
Adobe Portable Document Format
Description:
Download
Collections
PhD / Doctoral